A knife is an example of which class of lever?
First
Second
Third
Fourth
An example of class II lever is :
Beam balance
Pliers
Pair of seissors
Nut cracker
Match the following.
(i) - d, (ii) - b, (iii) - c, (iv) - a
(i) - b, (ii) - c, (iii) - d, (iv) - a
(i) - c, (ii) - a, (iii) - d, (iv) - b
(i) - c, (ii) - d, (iii) - a, (iv) - b
The number of simple machines identified by the scientists is :
6
7
5
10
Class I lever : Beam balance :: Class II lever : ?
Wheel barrow
Sea-saw
A forearm
Comparing a class II lever to class I lever the mechanical advantage is :
Lesser
Equal
Greater
Half
Which of the following is an example of class I lever?
Bottle opener
A knife
See-saw
The ratio of the work output to the work input is :
Mechanical advantage
Efficiency
Work
power
The force applied on the machine by the user is known as :
Load
Effort
Fulcrum
What is a simple machine?
Tool that gives electricity to other machines
A machine that does only one job
Any tool that makes work easier
A machine that is made up of many smaller parts
